Worst air pollution Chino Hills, today and tomorrow
Today (15 July): Air quality in Chino Hills is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 31.2/100).
Tomorrow (16 July 2026): Air quality in Chino Hills is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 29.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Chino Hills' air quality reflects the Pomona Valley and Chino Valley's enclosed position in the Inland Empire basin, with vehicle emissions from SR-71 the primary local source. The San Jose Hills and Chino Hills themselves create interesting topographic variation within the broader basin, but the persistent basin inversion still concentrates emissions and Chino Hills' hillside position provides only marginally better conditions than the flat Chino Valley floor below.
Today - 15 July | Pollution peaks at 08:00
AQI:
Fair
31.2/100
PM2.5 (fine particles):
Good
14.4/100
PM10 (coarse particles):
Fair
22.4/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
31.2/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
2.4/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Fair
29.9/100
PM2.5 (fine particles):
Good
13.3/100
PM10 (coarse particles):
Fair
23.0/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
29.9/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
2.6/100
Pollen forecast in Chino Hills
View pollen forecastFrequently Asked Questions
Is air quality bad in Chino Hills right now?
On 15 July 2026, overall air quality in Chino Hills is fair. AQI is the main air quality indicator at 31.2/100. Pollution peaks around 8:00 AM (O3: 31.2/100).
Will air quality be worse tomorrow in Chino Hills?
On 16 July 2026, air quality conditions in Chino Hills will be similar to today, with AQI forecast at fair at 29.9/100. Pollution peaks around 9:00 AM (O3: 29.9/100).
When is air pollution at its worst in Chino Hills?
Like most US cities, Chino Hills sees air quality shift from season to season. Typically, winter rains provide the only real relief from an otherwise persistent haze, while summer and early autumn bring the highest ozone levels, and wildfire smoke can spike particulate readings sharply from August through October. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Chino Hills based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United States?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app